From 4fe1929eeba1314d04eff3a0071bd668b1d89141 Mon Sep 17 00:00:00 2001
From: jljsj <liangjun.jiang@alipay.com>
Date: Fri, 17 Jul 2015 10:57:19 +0800
Subject: [PATCH] update radio index.md

---
 components/radio/index.md | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/components/radio/index.md b/components/radio/index.md
index 539ea4f1d8..41f1c978a9 100644
--- a/components/radio/index.md
+++ b/components/radio/index.md
@@ -20,4 +20,22 @@
 |-----------|------------------------------------------|------------|-------|--------|
 |  checked | 指定当前是否选中 | boolean  |   | false    |
 |  defaultChecked | 初始是否选中 | boolean |  | false |
-|  onChange | 组合时必须 | Function(e:Event) |  |  | |
+|  onChange | 变化时回调函数，组合时必须 | Function(e:Event) |  |  |
+| value | value参数，组合时根据此项判定checked | -- | | | |
+
+####组合使用：
+以value值来决定自身的checked，
+
+gruop里需一个做全局checked的参数
+`getInitialState() {
+  return {
+    r: 'a'
+  }
+}`
+
+在自身checked上判断`this.state.r === 'a'`；
+
+回调接口里
+`this.setState({
+       r: e.target.value
+     })`